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Finding the Fourth Proportional to 110,961.36, 153,093.12 and 65,644.56

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Solution

The fourth proportional to 110,961.36, 153,093.12 and 65,644.56 is: 90,569.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,961.36 : 153,093.12 = 65,644.56 : x
  2. Step 2: Convert to fraction form
    110,961.36/153,093.12 = 65,644.56/x
  3. Step 3: Cross multiply
    110,961.36x = 153,093.12 × 65,644.56
  4. Step 4: Simplify right side
    110,961.36x = 10,049,730,501.43
  5. Step 5: Solve for x
    x = 10,049,730,501.43/110,961.36
  6. Step 6: Final answer
    x = 90,569.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.